There is no serious rebuttal or debunking of Mcintyre contained within that post. Even if we ignore the details of that specific controversy, it is still obvious that there are

1) big problems in the climate science community with regard to data and replicability (see climateaudit for more than you could ever want)

2) massive statistical problems with reconstructions. See Mcshane and Wyner 2011.

I don't think it even matters what study we're talking about. A publicly-funded scientist who withholds "proprietary" source code used in a result of this magnitude is not doing good science.

The interesting question to me is whether any government policy was decided on this before it was debunked. I can't see any evidence of that necessarily, but would love a confirmation. Otherwise, isn't this exactly the type of thing that people are upset about regarding Reinhart-Rogoff?